release/src-rt/linux/linux-2.6/fs/exfat/exfat_blkdev.h

   1 /*
   2  *  Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
   3  *
   4  *  This program is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU General Public License
   6  *  as published by the Free Software Foundation; either version 2
   7  *  of the License, or (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, write to the Free Software
  16  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  */
  18
  19 /************************************************************************/
  20 /*                                                                      */
  21 /*  PROJECT : exFAT & FAT12/16/32 File System                           */
  22 /*  FILE    : exfat_blkdev.h                                            */
  23 /*  PURPOSE : Header File for exFAT Block Device Driver Glue Layer      */
  24 /*                                                                      */
  25 /*----------------------------------------------------------------------*/
  26 /*  NOTES                                                               */
  27 /*                                                                      */
  28 /*----------------------------------------------------------------------*/
  29 /*  REVISION HISTORY (Ver 0.9)                                          */
  30 /*                                                                      */
  31 /*  - 2010.11.15 [Joosun Hahn] : first writing                          */
  32 /*                                                                      */
  33 /************************************************************************/
  34
  35 #ifndef _EXFAT_BLKDEV_H
  36 #define _EXFAT_BLKDEV_H
  37
  38 #include "exfat_config.h"
  39 #include "exfat_global.h"
  40
  41 #ifdef __cplusplus
  42 extern "C" {
  43 #endif /* __cplusplus */
  44
  45   /*----------------------------------------------------------------------*/
  46         /*  Constant & Macro Definitions (Non-Configurable)                     */
  47         /*----------------------------------------------------------------------*/
  48
  49         /*----------------------------------------------------------------------*/
  50         /*  Type Definitions                                                    */
  51         /*----------------------------------------------------------------------*/
  52
  53         typedef struct __BD_INFO_T {
  54                 INT32 sector_size;      // in bytes
  55                 INT32 sector_size_bits;
  56                 INT32 sector_size_mask;
  57                 INT32 num_sectors;      // total number of sectors in this block device
  58                 BOOL  opened;           // opened or not
  59         } BD_INFO_T;
  60
  61         /*----------------------------------------------------------------------*/
  62         /*  External Variable Declarations                                      */
  63         /*----------------------------------------------------------------------*/
  64
  65         /*----------------------------------------------------------------------*/
  66         /*  External Function Declarations                                      */
  67         /*----------------------------------------------------------------------*/
  68
  69         INT32 bdev_init(void);
  70         INT32 bdev_shutdown(void);
  71         INT32 bdev_open(struct super_block *sb);
  72         INT32 bdev_close(struct super_block *sb);
  73         INT32 bdev_read(struct super_block *sb, UINT32 secno, struct buffer_head **bh, UINT32 num_secs, INT32 read);
  74         INT32 bdev_write(struct super_block *sb, UINT32 secno, struct buffer_head *bh, UINT32 num_secs, INT32 sync);
  75         INT32 bdev_sync(struct super_block *sb);
  76
  77 #ifdef __cplusplus
  78 }
  79 #endif /* __cplusplus  */
  80
  81 #endif /* _EXFAT_BLKDEV_H */
  82
  83 /* end of exfat_blkdev.h */